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C030-R412M LTE Cat M1/NB1 and 2G Mbed Enabled™ IoT starter kit User Guide
Abstract This guide explains how to set up the C030 Arm® Mbed Enabled™ Internet of Things Starter Kit to
begin evaluating u-blox LTE Cat M1 / NB1 cellular and GNSS modules.
www.u-blox.com
UBX-19010121 - R01
C030-R412M - User Guide
UBX-19010121 - R01 Page 2 of 27
Document Information
Title C030-R412M
Subtitle LTE Cat M1/NB1 and 2G Mbed Enabled™ IoT starter kit
Document type User Guide
Document number UBX-19010121
Revision and date R01 01-Jul-2019
Disclosure Restriction
Product status Corresponding content status
Functional Sample Draft For functional testing. Revised and supplementary data will be published later.
In Development /
Prototype
Objective Specification Target values. Revised and supplementary data will be published later.
Engineering Sample Advance Information Data based on early testing. Revised and supplementary data will be published later.
Initial Production Early Production Information Data from product verification. Revised and supplementary data may be published later.
Mass Production /
End of Life
Production Information Document contains the final product specification.
This document applies to the following products:
Product name Type number Firmware version PCN reference Product status
C030 C030-R412M-0-00 G0.V.00.00.10R UBX-19027009 Initial production
u-blox or third parties may hold intellectual property rights in the products, names, logos and designs included in this
document. Copying, reproduction, modification or disclosure to third parties of this document or any part thereof is only
permitted with the express written permission of u-blox.
The information contained herein is provided “as is” and u-blox assumes no liability for its use. No warranty, either express or
implied, is given, including but not limited to, with respect to the accuracy, correctness, reliability and fitness for a particular
purpose of the information. This document may be revised by u-blox at any time without notice. For the most recent
documents, visit www.u-blox.com.
Arduino® is a trademark of Arduino Srl or Arduino LLC registered and/or used in the EU, the U.S. and other countries/regions.
Arm and Mbed™ are registered trademarks of Arm Limited (or its subsidiaries) in the US and/or elsewhere.
JT® is a registered trademark of JTGlobal Limited in the EU, the U.S. and other countries/regions
Copyright © u-blox AG.
C030-R412M - User Guide
UBX-19010121 - R01 Page 3 of 27
Contents Document Information ................................................................................................................................ 2
Contents .......................................................................................................................................................... 3
1 Overview ................................................................................................................................................... 4
Using this guide .................................................................................................................................................... 4
Warnings and certifications .............................................................................................................................. 5
2 Hardware description ........................................................................................................................... 6
2.1 C030-R412M block diagram ...................................................................................................................... 8
2.2 Buttons, jumpers and switches ............................................................................................................. 10
2.2.1 Utilization of cellular modem USB sniffer ..................................................................................... 11
2.3 LED indicators ............................................................................................................................................ 12
2.4 Connectors ................................................................................................................................................. 13
2.5 Configuration links / components ......................................................................................................... 14
2.6 Test, break out points, and debug interfaces ..................................................................................... 18
2.7 Arduino™ UNO R3 compatible interface pin out ................................................................................. 19
2.8 Power supply options and LiPo battery usage .................................................................................... 20
3 Getting started ..................................................................................................................................... 22
3.1 C030-R412M board setup ....................................................................................................................... 22
3.2 Development PC USB driver configuration .......................................................................................... 22
3.3 Getting started with Mbed ...................................................................................................................... 22
4 Approvals ............................................................................................................................................... 23
4.1 European Conformance ........................................................................................................................... 23
4.2 US Federal Communications Commission notice .............................................................................. 24
4.3 Innovation, Science, Economic Development Canada notice .......................................................... 24
Appendix ........................................................................................................................................................25
A Glossary ..................................................................................................................................................25
Related documents ....................................................................................................................................26
Revision history ...........................................................................................................................................26
Contact ........................................................................................................................................................... 27
C030-R412M - User Guide
UBX-19010121 - R01 Overview Page 4 of 27
1 Overview The u-blox LTE Cat M1/NB1 and 2G Mbed Enabled™ IoT starter kit is a versatile development platform
that allows quick prototyping of a variety of applications for low-power Internet of Things (IoT).
The u-blox C030-R412M belongs to the u-blox C030 application board family, which consists of several
variants based on the type of u-blox cellular module used:
SARA-U201 HSPA module with 2G fallback
SARA-N211 NB-IoT (LTE Cat NB1) module
SARA-R412M LTE Cat M1 / NB1 and 2G module
LARA-R3121 LTE Cat 1 single-mode module with integrated GNSS receiver
The u-blox C030 application boards, except C030-R3121, have a u-blox MAX-M8C module or a ZOE
GNSS SiP as a concurrent GNSS receiver, thereby enabling straight forward development of location-
aware, globally communicating applications.
The u-blox C030-R412M board provides access to a variety of hardware interfaces (10/100 Mb/s
Ethernet, 22 GPIOs with SPI, I2C, UART, PWM) through the Arduino™ Uno R3 compatible header
connector.
An eUICC (embedded SIM) is integrated on the u-blox C030-R412M-U201 / C030-R3121 variants. The
eUICC comes with International Data Roaming Cellular Connectivity Service by JT® JTGlobal (formerly
Jersey Telecom) with 50 MB of data for the period of 90 days, which can be topped up and extended
on demand.
The u-blox C030-R412M board is powered by an Arm® Cortex-M4 based ST® STM32F437VGT Host
microcontroller, which is fully supported by the Arm® Mbed™ platform. The microcontroller has 512 kB
flash, 64 kB RAM, and runs an up-to-96 MHz system clock. The board provides simple USB drag-n-
drop programming and an ST-Link debug interface for the Host microcontroller. The Arm Mbed
platform provides free software libraries and online tools for professional rapid prototyping. The
programming is done using a standard-based C/C++ SDK. The Arm Mbed compiler also supports full
export to various tool chains, for projects that demand it as they go into production.
The u-blox C030-R412M also works with a wide choice of Integrated Development Environments
(IDEs) including but not limited to Arm® Keil®, GCC-based Eclipse IDEs.
This document applies to the C030-R412M variant integrating the SARA-R412M LTE Cat M1/NB1 and
2G module, and the ZOE-M8B GNSS receiver SiP (System-in-Package) only.
Using this guide
This guide assumes the user has basic computer skills and is familiar with the Windows Graphical
User Interface (GUI) and cellular module environments.
The following symbols are used to highlight important information in the document:
An index finger points out key information pertaining to device operation and performance.
A warning symbol indicates actions that could negatively impact or damage the device.
C030-R412M - User Guide
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Warnings and certifications
C030-R412M is an Electrostatic Sensitive Device (ESD).
CAUTION! Risk of short circuit of the battery when touching it with conducting
parts. In the unlikely event of a failure in the internal protection circuitry, there is
a risk of an explosion when charging fully or partially discharged batteries.
Replace the battery if it no longer has sufficient charge for unit operation. Control
the battery before using it if the device has not been operated for an extended
period of time.
C030-R412M application boards comply with the Directive 2011/65/EU of the European Parliament and
the Council on the Restriction of Use of certain Hazardous Substances in Electrical and Electronic
Equipment (EU RoHS 2) and its amendment Directive (EU) 2015/863 (EU RoHS 3).
C030-R412M application boards are RoHS 3 compliant and green (no halogens).
See section 4 for further details about certification approvals.
C030-R412M - User Guide
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2 Hardware description The u-blox C030-R412M has the following onboard hardware features:
u-blox SARA-R412M LTE Cat M1/NB1 and 2G module
u-blox ZOE-M8B concurrent GNSS receiver SiP for up to 3 GNSS (GPS, Galileo, GLONASS, and
BeiDou)
STM32F437VG Cortex-M4 ARM Host MCU with 1024 kB Flash, 256 kB SRAM and SWD connector
o 12 MHz crystal oscillator for system clock
o 32.768 kHz crystal oscillator for real-time clock
o 1.8 V operation
On-board ST-Link/V2-1 debugger/programmer with SWD connector
o ST-Link/V2-1 standalone development and debug capability
o USB re-enumeration; Virtual COM port, Mass Storage Device and Debug Port
o 5V from ST-Link/V2-1 Debug USB VBUS, 3.3V operation
o (CMSIS-DAP variant of the FW with extended features will be available in the future)
On-board TI® bq24295 Single Cell LiPo battery charger and TI® bq27441-G1 Battery Fuel Gauge
Molex® SPOX™ 5268-03A LiPo battery connector
o Supports battery types like LP-503759-IS-3 from BAK (battery is not included)
On-board SiLabs® CP2105 USB to Dual UART Bridge as Serial USB sniffer
o Alternative to ST-Link/V2-1 Virtual COM Port when ST-LINK/V2-1 is not used/available
o Alternative to Main Supply and Debug USB 5V VBUS inputs
o Sniffing serial communication between the Host MCU and the Cellular module
RGB User LED, and two push buttons: User and Reset
On-board SiLabs® Si7034-A10 Humidity and Temperature Sensor
o Only the temperature sensor is used; it cannot be used for humidity measurements
SD card socket for file storage
SMA RF connectors for 50 Ω cellular and GNSS active antennas
MicroSIM card holder
Extension:
o Arduino™ Uno R3 compatible interface
o 6 analog capable inputs
o 8 PWM capable outputs
o 22 GPIOs
o 1 x SPI
o 1 x I2C
o 1 x UART with HW flow control option (RTS, CTS)
Flexible board power supply:
o 5 V main supply USB, debug USB, and sniffer USB VBUS inputs
o Arduino UNO R3 VIN input for external power supply
VIN voltage level should not exceed the C030 component and SARA-R412M absolute maximum
ratings.
o 2.8 V to 4.4 V LiPo Battery input
Support of a wide range of Integrated Development Environments (IDEs), including but not limited
to GCC-based IDEs, ARM mbed
ARM mbed Enabled (see http://mbed.org)
C030-R412M - User Guide
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Figure 1: C030-R412M application board overview
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2.1 C030-R412M block diagram
Figure 2 shows the block diagram of the C030-R412M.
Figure 2: C030-R412M block diagram
Figure 2 shows the major interfaces and internal connections of the C030-R412M.
The major component layout of the board is provided in Figure 3.
The C030-R412M consists of three sections:
Utility section
The utility section accommodates the components that provide SW debugging / virtual COM port
(ST-Link/CMSIS-DAP) and Ethernet Interface functions. The SW debugging / virtual COM port
functions are executed by the InterfaceMCU via the “Debug USB” interface.
As this section is only needed during the application development and test activities, it could be
physically snapped off from the application section to decrease the size and power consumption.
The utility section is powered up from the “Debug USB” 5V VBus. When the “Debug USB” is not
connected, SW debugging / virtual COM port and Ethernet Interface functions are turned off and
isolated from the application section.
The “Auxiliary 5V USB” connector on the utility section could be used to boost the power input to the
application section if the current input from the “Debug USB” 5V Vbus is not sufficient.
Application section
The application section accommodates the GNSS and cellular modules, a eUICC (Embedded SIM) /
MicroSIM socket, the HostMCU, the battery charging/management and power supply circuitry, the
SD card interface and socket, the Serial USB sniffer for communication between the HostMCU to the
cellular module and similarly to the InterfaceMCU. The application section also has a temperature
sensor for measuring ambient temperature of the board. Reset and user buttons, configuration
jumpers and User and system status indication LEDs are placed in the application section.
VSYS
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The application section is designed for minimal power consumption. Unutilized circuitries and
sections could be either turned off by software or inhibited electronically.
The Arduino Uno R3 interface on the application section could be used to integrate sensors, actuators
and power/battery supply circuitries as Arduino Shields/expansion daughter PCBs.
The application section could run standalone when the utility section is snapped off.
Antenna section
The C030-R412M has SMA Jack edge connectors for Cellular and GNSS antennas.
The C030-R412M major component layout is provided in Figure 3.
Figure 3: C030-R412M major component locations
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2.2 Buttons, jumpers and switches
The C030-R412M is equipped with several buttons, jumpers and a switch that the user can easily
utilize. The functions and locations of these components are provided in Table 1 and shown in Figure 3.
Annotation Function Description Section
USER User button Push button for application use. Connected to HostMCU GPIO
Port PC13
Application
RST1 Reset button Push button to reset the HostMCU Application
P1 System power jumper System power input selection:
Pin 1-2: on board Power/Battery Management (default
configuration)
Pin 2-3: VIN pin of Arduino Uno R3 interface
Application
S2 Serial USB sniffer source select Select the cellular module communication UART channel to sniff:
Position 1: isolation
Position 2: UART1 communication between HostMCU and
cellular module
Application
Table 1: C030-R412M buttons, jumpers, and switches
Figure 4 shows the C030-R412M P1 and P3 jumpers and S2 switch positions.
Figure 4: C030-R412M jumper and switches
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2.2.1 Utilization of cellular modem USB sniffer
The C030-R412M cellular modem USB sniffer provides two virtual UART COM channels to the
connected USB master (development PC). The cellular modem USB sniffer USB VBUS 5VDC rail power
the application section of the C030-R412M. The virtual COM ports are utilized as follows;
Standard COM port as on the development PC: HostMCU USART2 Tx “printf” Channel sniffing
o HostMCU USART2 Tx is also connected to the InterfaceMCU on the utility section
o HostMCU USART2 Rx is connected to InterfaceMCU on the utility section
o Host HostMCU USART2 Rx can be connected to cellular modem USB sniffer Standard COM
port Tx channel via R137 link (see Table 4). In this case, do one of the following:
The utility section should be powered off (disconnect Debug USB)
Snap off the utility section
Remove R133 link (see Table 4)
Enhanced COM port as on the development PC. Two operation modes can be selected by using S2
switch (see Figure 4):
o S2 position 1: Isolation
o S2 position 2: HostMCU USART1 to cellular module communication. Allows direct access to
the cellular module. In this case, do one the following:
Remove R105 link
Set the HostMCU PA_5 Port as GPIO input to avoid collusion
Enhanced COM port Mode 1 direct access to the cellular module allows using development PC
applications like u-blox m-center, to exercise cellular module AT command interface bypassing the
C030-R412M HostMCU.
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2.3 LED indicators
The C030-R412M has a few LEDs to indicate the board status for generic application use. Due to the
low power design of C030-R412M, if the C030-R412M is not connected to an external power source or
is powered from battery only, all the LEDs except D3 (User RGB LED) are turned off.
As the D3 and LED_G3 LEDs are controlled by the application, they can be completely turned off to
save power.
The C030-R412M LED indicators are listed in Table 2 and their locations are depicted in Figure 3.
Annotation Function Description Color
LED1 Debug USB VBUS VBUS 5 V indicator for InterfaceMCU supply
LED2 Serial USB Sniffer VBUS VBUS 5 V indicator for serial USB sniffer supply
LED3 Aux 5 V USB VBUS VBUS 5 V indicator for 5 VDC supply input
LED4 Cellular module USB VBUS VBUS 5 V indicator
LED5 Battery charging / man. Input Battery Charging/Management 5 VDC input supply indicator
LED6 STLink/CMSIS-DAP status InterfaceMCU Debugging/Flashing status RED/GREEN indicator
LED7 Battery charging status Battery Charging/Management battery charging status indicator
D3 User RGB LED HostMCU GPIO driven; PE_3: RED, PE_4: GREEN, PE_1: BLUE (all
negative logic)
ETH green1 ETH connection speed Connection speed indication. On:100 Mb/s, Off:10 Mb/s
ETH yellow1 ETH transaction/traffic Indicates Ethernet transaction. Controlled by HostMCU GPIO PE_7
Table 2: C030-R412M LED indicators
1 Ethernet LED indicators are powered by 3.3 VDC generated from the Debug USB VBUS, which powers the whole Utility section.
If the Debug USB is not connected to a USB master (for example, a development PC), the Utility section is powered down, and
therefore the Ethernet LED indicators do not light up.
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2.4 Connectors
The C030-R412M has various connectors as listed in Table 3. See Figure 3 for connector locations.
Name Function Description Section
ETH1 Ethernet receptacle 10/100 Mb/s Ethernet network connector Utility
J6 Auxiliary 5V USB Micro USB device connector for auxiliary 5 VDC supply input to
connect a high current 5 VDC PSU
Utility
J1 Debug USB Micro USB device connector for 5 VDC supply and ST-Link/CMSIS-
DAP debug interface
Utility
J2 Micro SD card socket Micro SD card holder for FAT file system Application
J3 Serial USB sniffer Micro USB device connector for 5 VDC supply and serial USB sniffer
interface
Application
J4/J5 LiPo battery connector LiPo chargeable battery connector. J4: Not populated alternative
connector, J5: Molex 22-05-7035
Application
J7 Cellular module USB Micro USB device connector for cellular module USB interface Application
J8 SIM card holder SIM card holder (for C030-N211 and C030-R410M only) Application
SWD InterfaceMCU debug 10-pin Arm Cortex debug connector for InterfaceMCU (may not be
populated)
Utility
ST_SWD InterfaceMCU debug Tag-Connect-NL Plug-of-Nails™ connector compatible PCB touch
points footprint for InterfaceMCU
Utility
SWD_TARGET HostMCU debug 10-pin Arm Cortex debug connector for InterfaceMCU (may not be
populated)
Application
SWD_TGT1 HostMCU debug Tag-Connect-NL Plug-of-Nails connector compatible PCB touch
points footprint for HostMCU
Application
ANT Cellular main antenna SMA connector for the cellular module primary antenna (ANT1, Tx/Rx) Application
GPSANT GNSS receiver antenna SMA connector for the ZOE-M8B GNSS receiver Application
Table 3: C030-R412M connector description
The J2 Micro SD card socket shares the Arduino interface D10 to D13 pins, which are used as an
SPI bus to the HostMCU SPI4 peripheral. The D10 pin (NSS) is used as an SD card SPI slave select
signal. When the SPI bus on the Arduino interface is utilized by other SPI slaves on daughter
boards, free Arduino digital IO lines should be utilized for slave select signals.
As the SD card interface and its supply voltage are designed to work with 3.3 VDC, the SD card
socket shall not be used when the Arduino interface IOREF voltage level is set to higher than
3.3 VDC. Such usage could cause a permanent damage and/or a failure to an SD card inserted in
the J2 socket and the C030-R412M’s Arduino™ interface level translators. (See R152 and R153
links in Table 4).
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2.5 Configuration links / components
The C030-R412M has multiple configurations links and components as SMT footprints, which require
de-soldering/soldering these links or components on the PCB. The footprints of these configuration
links, which are listed in Table 4 and depicted in Figure 5, are adequate to solder 0603 SMT
components or short with solder.
Name Function Variant2
R412M
Description
R2 InterfaceMCU 1.8VDC supply sampling Utilized for monitoring HostMCU 1.8 VDC supply level through a
voltage divider
R3 InterfaceMCU PB_3 port pull up link Link to InterfaceMCU 3.3 VDC rail
R5 InterfaceMCU 3.3VDC analog reference
link
Reference voltage for InterfaceMCU AtoD conversion
R6 Cellular module current sense (Provisional3) Connected to cellular module power supply current
instrumentation amplifier output to measure the current level
R7 GNSS module current sense (Provisional3) Connected to GNSS module power supply current
instrumentation amplifier output to measure the current level
R14 InterfaceMCU 32 kHz clock input Ground connection
R15 InterfaceMCU BOOT0 pull up Link to InterfaceMCU 3.3 VDC PSU
R20 InterfaceMCU USART2 virtual COM Tx
link
Link to HostMCU USART1 Tx signal through 3.3 V to 1.8 V level
translator
R21 InterfaceMCU USART2 virtual COM Rx
link
Link to HostMCU USART1 Rx signal through 3.3 V to 1.8 V level
translator
R22 InterfaceMCU virtual COM loop back For testing InterfaceMCU Virtual COM port
R23 InterfaceMCU I2C1 SDA link (Provisional4) Link to HostMCU I2C3 SDA bus through 3.3 V to
1.8 V level translator
R25 InterfaceMCU I2C1 SCL link (Provisional4) Link to HostMCU I2C3 SCL bus through 3.3 V to
1.8 V level translator
R31 Arduino Interface IOREF to 3.3V 33 Ω link to 3.3 VDC
R33 Arduino Interface 3.3V supply Link to 3.3VDC rail
R38 Arduino Interface A4 pin voltage divisor 1 kΩ voltage divisor resistor for analog input. It could be removed
for I2C SDA alternative usage
R39 Arduino Interface A5 pin voltage divisor 1 kΩ voltage divisor resistor for analog input. It could be removed
for I2C SCL alternative usage
R47 HostMCU BOOT1 pull down HostMCU BOOT1 input setting to ‘0’
R48 HostMCU temperature sensor power
link
Si7034-A10 Temperature sensor power supply link5. Supply
feeding to the temperature sensor from the HostMCU PD_ 14
when it is set to ‘1’. PD_14 Push-Pull output circuitry limits the
current to the sensor.
R53 HostMCU 32 kHz RTC link Links RTC crystal to the HostMCU
R56 Application section 3.3VDC PSU control Links the HostMCU PE_0 port to control 3.3VDC PSU. ‘0’:disable,
‘1’:enable
R59 HostMCU reset pull up The application section reset circuitry pull up resistor
R60 HostMCU 32KHz RTC link Links RTC crystal to the HostMCU
R61 HostMCU 12MHz XTAL link The HostMCU 12 MHz crystal link
2 : Connected/populated, : Not connected/open 3 Provisional feature (Module current consumption): instrumenting the current consumption of the Cellular and GNSS Modules
from the InterfaceMCU to characterize and instrument the application behavior during development. 4 Provisional feature (I2C Bus Access): accessing Application section sensors and devices on the HostMCU I2C3 Bus from
InterfaceMCU to characterize and instrument the application behavior during development. 5 The Si7034-A10 is a Temperature and Relative Humidity Sensor. The HostMCU PD_4 port cannot provide enough current to
the sensor to run the Humidity sensor’s heating element. So, the Humidity feature of the sensor shall not be used.
C030-R412M - User Guide
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Name Function Variant2
R412M
Description
R63 IC19 BQ27441 BIN pull up link to BQVDD Provisional
R68 HostMCU BOOT0 pull down HostMCU BOOT0 10 kΩ pull down to ground for input setting to
‘0’
R73 GNSS module backup supply by-pass ZOE-M8B V_BCKP by-pass
R77 Cellular module voltage translator
supply
Voltage translator supply level for the cellular module side for the
HostMCU USART1 communication. Link the translator supply
input to cellular module’s V_INT internal supply output
R78 Cellular module voltage translator
supply
Voltage translator supply level for the cellular module side for the
HostMCU USART1 communication. Link the translator supply
input to the application section supply rail VSYS
R79 LiPo battery charging link Battery charging and management circuitry link to LiPo battery
for charging
R86 Icellular signal pull down Provisional
R95 Cellular module UB_M_PWRON to
M_VBCKUP link
100 kΩ connection between M_VBCKUP and UB_M_PWRON nets
R96 Cellular module V_BCKP link Link to M_VBCKUP net
R97 Cellular module PWR_ON link The HostMCU PD_2 port UB_M_PWRON signal to cellular module
PWR_ON pin
R99 The HostMCU PC_11port to cellular
module GPIO1 link
Not functional
R100 Serial USB sniffer to cellular module
GPIO1 link
Not functional
R101 Cellular module USB VBUS link Cellular module VUSB_DET
R102 Cellular module GPIO2 link Link to the HostMCU PD_1 port
R103 Cellular module GPIO4 link Not functional
R104 Cellular module USB Data_N signal link Cellular module USB signal to J7 cellular module USB connector
R105 HostMCU USART1 Tx link When removed isolates HostMCU USART1 Tx pin PA_9 from the
cellular module. Could be used in a configuration to drive the
cellular module from the serial USB sniffer directly.
R107 Cellular module USB Data_P signal link Cellular module USB signal to J7 cellular module USB connector
R108 InterfaceMCU PSU EN reference PSU EN voltage threshold voltage divider resistor
R111 HostMCU USART1 Rx link When removed isolates HostMCU USART1 Rx pin PA_10 from the
cellular module
Could be used in a configuration to drive the cellular module from
the serial USB sniffer directly
R112 IC19 BQ27441 BIN link to LiPo battery Provisional
R113 Cellular module I2C SCL link Not functional
R114 Cellular module I2C SDA link Not functional
R115 Cellular Module GPIO2 option Cellular module GPIO2 to ground
R116 Cellular Module Pin 21 option Cellular module Pin 21 to ground
R117 Cellular Module RSVD pin option Cellular module RSVD pin to ground
R119 Arduino™ Uno R3 interface A5 pin I2C
provision
Link to Arduino™ Uno R3 interface SCL pin
R120 Arduino™ Uno R3 interface A4 pin I2C
provision
Link to Arduino™ Uno R3 interface SDA pin
R121 GNSS PPS LED G3 disable option Link to LED
R123 GPS_RST net link Provisional
R124 HostMCU 1.8V Backup Battery link Links the 1.8V battery backed supply rail to the HostMCU 4 kB of
battery backed SRAM
R131 IC20 BQ24295 QON Pull down Provisional
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Name Function Variant2
R412M
Description
R132 InterfaceMCU level translator OE to
3.3VDC
Links OE input of the level translator to 3.3VDC
R133 HostMCU USART2 virtual COM Rx link Link to InterfaceMCU USART2 Rx signal through 1.8V to 3.3V
level translator
R134 HostMCU USART2 virtual COM Tx link Link to InterfaceMCU USART2 Tx signal through 1.8V to 3.3V
level translator
R135 HostMCU external system clock (Osc.)
link
Link to 8 MHz clock generated from InterfaceMCU to drive the
HostMCU
R136 HostMCU USART2 USB sniffer Tx link Link to serial USB sniffer Rx input
R137 HostMCU USART2 USB sniffer Rx link Link to serial USB sniffer Tx output
R142 InterfaceMCU 3.3VDC supply sampling Utilised for monitoring InterfaceMCU 3.3VDC supply level
R143 InterfaceMCU level translator OE GND
link
Links OE input of the level translator to GND to disable the
translator
R144 HostMCU PA_0 pull up HostMCU PA_0-WKUP pin setting
R145 HostMCU BOOT1 pull up HostMCU BOOT1 input setting to ‘1’
R146 HostMCU BOOT0 pull up HostMCU BOOT0 input setting to ‘1’
R147 Serial USB sniffer reset link Link between serial USB sniffer’s reset input to the application
section reset signal
R149 Cellular Module DTR pull down SARA-R412M DTR input pull down
R150 The Si7034-A10 is a Temperature and
Relative Humidity Sensor power link
Link to 1.8VDC supply rail. See R48 link for utilization.
R151 Arduino™ interface 1.8V IO supply option Provisional
R152 Arduino™ interface IOREF voltage level
selection for 3.3VDC
Link to Arduino™ interface 3.3V pin
R153 Arduino™ interface IOREF voltage level
selection for 5VDC
Link to Arduino™ interface 5V pin
R154 Arduino™ interface 5V pin to USB5V rail USB5V supply link for Arduino™ interface
R160 M_GPIO3 net to PB8 link Link to Arduino™ interface
R161 M_GPIO4 net to PB15 link Link to Arduino™ interface
R162 GPS_PPS net to cellular module GPIO1
link
Link to SARA-R412M GPIO1
R164 IC22 output link to GNSS module Provisional
R165 1V8_ZOE supply link to GNSS module 1.8V Supply rail to ZOE-M8B
R167 IC22 100k resistor Provisional
R168 M_GPIO3 net link to cellular module Link to SARA-R412M GPIO3
R170 M_VINT net link to cellular module GPIO5 Link to SARA-R412M GPIO5
R171 Arduino™ interface D5 pin to IC10 link Provisional isolation
R172 IC10 A6 pin to PA5 link Provisional isolation
R173 PA5 to Arduino™ interface D5 pin direct
link
Provisional
R174 USART1_TX net USB sniffer link Link to S2 switch
R175 I_GNSS signal connection to Arduino™
interface A1
Provisional
R178 PC8 link to Arduino™ interface D4 Link to Arduino™ interface
R179 PB1 connection to Arduino™ interface D4 Provisional for backward compatibility
R180 Cellular module M_SCL net to Arduino™
interface SCL pin
Provisional
R181 Cellular module M_SDA net to Arduino™
interface SDA pin
Provisional
C030-R412M - User Guide
UBX-19010121 - R01 Hardware description Page 17 of 27
Name Function Variant2
R412M
Description
R182 U_GNSS signal connection to Arduino™
interface A2
Provisional
R183 VC Cellular supply rail connection to
Arduino™ interface A3
Provisional
R184 I_GNSS instrumentation signal link to
PB1
Provisional measurement signal
R185 USART1_Tx net to PD8 link Link to Arduino™ interface
R186 USART1_Rx net to PD9 link Link to Arduino™ interface
R187 SDCard Detect signal pull up Provisional pull up for PE8
R7122 Arduino™ interface A0 to MCUWKUP net Provisional
Table 4: C030-R412M HW configuration links and components
Figure 5: C030-R412M configuration links and components
C030-R412M - User Guide
UBX-19010121 - R01 Hardware description Page 18 of 27
2.6 Test, break out points, and debug interfaces
The C030-R412M has test and break out points to access key signals of the circuitry as well as
interface and Host MCU debug interfaces placed on the bottom side of the PCB for easy access. These
are listed in Table 5 and depicted in Figure 6.
Name Signal
01 Cellular module supply voltage
02 GNSS module supply voltage
03 InterfaceMCU SWDCLK
04 InterfaceMCU SWDIO
05 InterfaceMCU reset
06 3.3 VDC supply for InterfaceMCU
07 OE signal for IC4 level translator between utility and application sections
08 to 19 N/A
20 1.8VDC supply for Host MCU
21 Host MCU SWDIO
22 Host MCU Reset
23 Host MCU SWDCLK
24 Host MCU BOOT0
44 Cellular module pin 44 break-out (SPK_P). Unused
45 Cellular module pin 45 break-out (SPK_N). Unused
46 Cellular module pin 46 break-out (MIC_BIAS). Unused
47 Cellular module pin 47 break-out (MIC_GND). Unused
48 Cellular module pin 48 break-out (MIC_N). Unused
49 Cellular module pin 49 break-out (MIC_P). Unused
RSVDS1 Cellular module pin 19 break-out (RSVD, Reserved). Unused
ST-SWD1 Tag-Connect-NL Plug-of-Nails™ connector compatible PCB touch points footprint for Interface MCU
SWD_TGT1 Tag-Connect-NL Plug-of-Nails™ connector compatible PCB touch points footprint for Host MCU
Table 5: C030-R412M test and break out points and debug interfaces
Figure 6: C030-R412M test and break out points and debug interfaces (bottom view)
C030-R412M - User Guide
UBX-19010121 - R01 Hardware description Page 19 of 27
2.7 Arduino™ UNO R3 compatible interface pin out
C030-R412M Arduino™ compatible interface details are given in Table 6 and shown in Figure 7.
Conn. Pin
N°
Arduino
naming
Description HostMCU port assignment Alternate functions and notes
Ard
1A
1 n.c. Not connected
2 IOREF IO reference voltage level.
Connected to 3.3 VDC
Could be used as input for external
IO level setting.
3 nR Reset signal input.
Negative logic
4 3.3V 3.3 VDC supply output Controlled by HostMCU Port PE_0
0: disable, 1:enable
5 5V 5 VDC Reference input Could be used as IO Reference input
6 GND Ground level
7 GND Ground level
8 VIN External DC supply input In the range of 2.5 VDC to 5.5 VDC See Jumper J1 in section 2.4
Ard
1B
9 A0 Analog input PA_3 Analog input6 GPIO, Ext. interrupt
10 A1 Analog input PC_0 Analog input6 GPIO, Ext. interrupt
11 A2 Analog input PC_3 Analog input6 GPIO, Ext. interrupt
12 A3 Analog input PA_4 Analog input6 GPIO, Ext. interrupt
13 A4 Analog input PA_6 Analog input6, PB_7 I2C1 SDA7 GPIO, Ext. interrupt
14 A5 Analog input PB_0 Analog input6, PB_6 I2C1 SCL8 GPIO, Ext. interrupt
Ard
1C
15 D0 Digital I/O, UART RX PD_9, USART3_TX GPIO, Ext. interrupt
16 D1 Digital I/O, UART TX PD_8, USART3_RX GPIO, Ext. interrupt
17 D2 Digital I/O PD_11 USART3_CTS, GPIO, External
interrupt
18 D3 Digital I/O PB_14 USART3_RTS, GPIO, PWM, Ext.
interrupt
19 D4 Digital I/O PC_8 GPIO, PWM, Ext. interrupt
20 D5 Digital I/O PA_5 GPIO, PWM, Ext. interrupt
21 D6 Digital I/O PB_8 GPIO, PWM, Ext. interrupt
22 D7 Digital I/O PB_15 GPIO, PWM, Ext. interrupt
Ard
1D
23 D8 Digital I/O PD_15 GPIO, Ext. interrupt
24 D9 Digital I/O PD_12 GPIO, Ext. interrupt
25 D109 Digital I/O PE_11, SPI4 NSS, shared with SD Card GPIO, PWM, Ext. interrupt
26 D11 Digital I/O PE_6, SPI4 MOSI, shared with SD Card GPIO, PWM, Ext. interrupt
27 D12 Digital I/O PE_5, SPI4 MISO, shared with SD Card GPIO, PWM, Ext. interrupt
28 D13 Digital I/O PE_2, SPI4 SCK, shared with SD Card GPIO, Ext. interrupt
29 GND Ground level
30 AREF 3.3 VDC reference
31 SDA I2C SDA I/O PB_6 I2C1 SCL GPIO, Ext. interrupt
32 SCL I2C SCL Output PB_7 I2C1 SDA GPIO, Ext. interrupt
Table 6: C030-R412M Arduino UNO R3 compatible interface
6 Pin is connected to the port via 1 kΩ/1 kΩ resistive voltage divider. 7 PB_7 could be connected to the (A4) Ard1B pin 13 to provide I2C1 SDA signal. 8 PB_6 could be connected to the (A5) Ard1B pin 14 to provide I2C1 SCL signal. 9 Arduino interface D10 to D13 pins are used as an SPI Bus to HostMCU SPI4 peripheral. The D10 to D13 pins are shared with the
SD card socket.
C030-R412M - User Guide
UBX-19010121 - R01 Hardware description Page 20 of 27
Figure 7: C030-R412M Arduino™ UNO R3 connectors
2.8 Power supply options and LiPo battery usage
The C030-R412M can be powered up from several resources, individually or all together. The power
supply usage configurations are provided in Table 7.
# Connector Description
1 Debug USB Uses development PC’s USB 5 VDC VBUS to power up the utility and application sections of
the C030-R412M. It charges up the LiPo battery if it is connected.
2 Aux 5V USB Auxiliary USB power input. A USB power supply could be connected to power up only the
application section of the C030-R412M.
It charges up the LiPo battery if it is connected. There is no communication functionality.
3 Serial USB sniffer Uses Development PC’s USB 5 VDC VBUS to power up only the application section of the
C030. It charges up the LiPo battery if it is connected. The serial USB sniffer circuitry could
only be powered from its dedicated USB connector.
4 LiPo battery The C030 application section could run only from a LiPo Battery connected. If one or many
of the #1, #2, #3 USB connections are available. The LiPo Battery is charged up as well.
5 Arduino™ UNO R3 VIN Pin 8 Arduino™ UNO R3 VIN pin 8 could be used to power up entire the C030 application section
except serial USB sniffer circuitry. STLink (or CMSIS-DAP when available) feature could be
used through the debug USB. However, the C030-R412M application section including LiPo
Battery management circuitry is disconnected.
The VIN input voltage should be in the range of 2.5 VDC to 5.5 VDC.
Table 7: C030 power supply options and LiPo battery usage
The C030-R412M could run on a single supply input from #1 debug USB or #3 serial USB sniffer.
However, the cellular module transmission power demand might not be satisfied from these
connections. In such a use case, the C030-R412M might suffer brownout due to USB VBUS supply
rail cuts because of USB current limitations. Therefore, either a 5 VDC USB power supply with
~3 ADC capacity should be connected to the Aux 5V USB connector and/or an adequate LiPo
battery, such as a BAK LP-503759-IS-3, should be connected to the LiPo battery connector. The
locations of the power supply connections are shown in Figure 8.
It is recommended to use a LiPo battery in addition to the USB connections, because high
frequency current demands might not be provided by the USB VBUS rails.
C030-R412M - User Guide
UBX-19010121 - R01 Hardware description Page 21 of 27
Figure 8: C030 power supply connection options
C030-R412M - User Guide
UBX-19010121 - R01 Getting started Page 22 of 27
3 Getting started
3.1 C030-R412M board setup
1. Connect the Main cellular antenna to the cellular main antenna SMA female connector (ANT1).
2. Connect the GNSS antenna to the GNSS antenna SMA female.
3. Configure the C030-R412M as described in section 2.2.
4. Power up the C030-R412M as described in section 2.8.
3.2 Development PC USB driver configuration
Although the USB drivers can be loaded by the development PC operating system automatically, it is
recommended to follow the guidelines mentioned below:
The debug USB port STLink/V2-1 interface needs a driver. These drivers are available at:
http://www.st.com/content/st_com/en/products/embedded-software/development-tool-
software/stsw-link009.html.
Similarly, the cellular modem USB sniffer USB port interface needs a driver, which is available at:
http://www.silabs.com/products/interface/usb-bridges/classic-usb-bridges/device.cp2105
3.3 Getting started with Mbed
Up-to-date information on how to operate the C030-R412M starter kit within the Mbed development
environment is available at:
https://developer.mbed.org/platforms/ublox-C030-R412M/
(Link forwards automatically to the site https://os.mbed.com/platforms/ublox-C030-R410M/)
C030-R412M - User Guide
UBX-19010121 - R01 Approvals Page 23 of 27
4 Approvals
For the detailed list of Radio Access Technologies and bands included in each certification
approval of the SARA-R412M modules, and for detailed instructions about how to configure the
SARA-R412M modules for certification approvals compliance perspective, see the Approvals
sections of the SARA-R4/SARA-N4 series System Integration Manual [2].
4.1 European Conformance
The C030-R412M application board has been evaluated against the essential requirements of the
2014/53/EU Radio Equipment Directive.
In order to satisfy the essential requirements of the 2014/53/EU Radio Equipment Directive, the device
is compliant with the following standards:
Radio Frequency spectrum use (Article 3.2):
o EN 301 511
o EN 301 908-1
o EN 301 908-13
o EN 303 413
Electromagnetic Compatibility (Article 3.1b):
o EN 301 489-1
o EN 301 489-19
o EN 301 489-52
Health and Safety (Article 3.1a)
o EN 62311
o EN 62368-1
o EN 60950-1
The conformity assessment procedure for C030-R412M application boards, referred to in Article 17
and detailed in Annex III of Directive 2014/53/EU, has been followed.
Thus, the following marking is included in the product:
There are no restrictions for the commercialization of the C030-R412M application boards in all the
countries of the European Union.
Radiofrequency radiation exposure Information: this equipment complies with radiation exposure
limits prescribed for an uncontrolled environment for fixed and mobile use conditions. This
equipment should be installed and operated with a minimum distance of 20 cm between the
radiator and the body of the user or nearby persons. This transmitter must not be collocated or
operating in conjunction with any other antenna or transmitter except as authorized in the
certification of the product.
The gain of the cellular system antenna(s) used for C030-R412M application boards (i.e. the
combined transmission line, connector, cable losses and radiating element gain) must not exceed
8.2 dBi in the 800 MHz band (i.e. LTE FDD-20 band), 3.21 dBi in the 900 MHz band (i.e. GSM 900 or
LTE FDD-8 band), 9.09 dBi in the 1800 MHz band (i.e. GSM 1800 or LTE FDD-3 band) for mobile and
fixed or mobile operating configurations.
C030-R412M - User Guide
UBX-19010121 - R01 Approvals Page 24 of 27
4.2 US Federal Communications Commission notice
United States Federal Communications Commission (FCC) IDs:
XPYUBX18ZO01
Radiofrequency radiation exposure Information: this equipment complies with radiation exposure
limits prescribed for an uncontrolled environment for fixed and mobile use conditions. This
equipment should be installed and operated with a minimum distance of 20 cm between the
radiator and the body of the user or nearby persons. This transmitter must not be collocated or
operating in conjunction with any other antenna or transmitter except as authorized in the
certification of the product.
The gain of the cellular system antenna(s) used for C030-R412M application boards (i.e. the
combined transmission line, connector, cable losses and radiating element gain) must not exceed
8.69 dBi in the 700 MHz band (i.e. the LTE FDD-12 band), 9.15 dBi in the 750 MHz band (i.e. the LTE
FDD-13 band), 9.41 dBi in the 850 MHz band (i.e. the GSM 850 / LTE FDD-5 band), 12.01 dBi in the
1700 MHz band (i.e. the LTE FDD-4 band), 12.01 dBi in the 1900 MHz band (i.e. the GSM 1900 / LTE
FDD-2 band) for mobile and fixed or mobile operating configurations.
4.3 Innovation, Science, Economic Development Canada notice
ISED Canada (formerly known as IC - Industry Canada) Certification Numbers:
8595A-UBX18ZO01
Radiofrequency radiation exposure Information: this equipment complies with radiation exposure
limits prescribed for an uncontrolled environment for fixed and mobile use conditions. This
equipment should be installed and operated with a minimum distance of 20 cm between the
radiator and the body of the user or nearby persons. This transmitter must not be collocated or
operating in conjunction with any other antenna or transmitter except as authorized in the
certification of the product.
The gain of the cellular system antenna used for the C030-R412M application boards (i.e. the
combined transmission line, connector, cable losses and radiating element gain) must not exceed
5.63 dBi in the 700 MHz band (i.e. the LTE FDD-12 band), 5.94 dBi in the 750 MHz band (i.e. the LTE
FDD-13 band), 6.12 dBi in the 850 MHz band (i.e. the GSM 850 / LTE FDD-5 band), 8.29 dBi in the
1700 MHz band (i.e. the LTE FDD-4 band), 8.52 dBi in the 1900 MHz band (i.e. the GSM 1900 / LTE
FDD-2 band) for mobile and fixed or mobile operating configurations.
C030-R412M - User Guide
UBX-19010121 - R01 Appendix Page 25 of 27
Appendix
A Glossary
Abbreviation Definition
Arm Arm (Advanced RISC Machines) Holdings
CE Certification Mark for EHS compliance in the European Economic Area
CTS Clear To Send
eUICC embedded SIM
FCC Federal Communications Commission
FDD Frequency Division Duplex
GLONASS Global Navigation Satellite System
GND Ground
GNSS Generic Navy Simulation System
GPIO General Purpose Input Output
GSM Global System for Mobile Communication
HSPA High Speed Packet Access
I2C Inter-Integrated Circuit
IoT Internet of Things
ISED Innovation Science Economic Development
LTE Long Term Evolution
PCB Printed Circuit Board
PWM Pulse Width Modulation
RAM Random Access Memory
RTS Request To Send
SCL Serial Clock
SDA Serial Data
SIM Subscriber Identification Module
SiP System in Package
SPI Serial Peripheral Interface
UART Universal Asynchronous Receiver-Transmitter
USB Universal Serial Bus
Table 8: Explanation of the abbreviations and terms used
C030-R412M - User Guide
UBX-19010121 - R01 Related documents Page 26 of 27
Related documents [1] u-blox SARA-R4/SARA-N4 series Data Sheet, Doc. No. UBX-16024152
[2] u-blox SARA-R4/SARA-N4 series System Integration Manual, Doc. No. UBX-16029218
[3] u-blox Nested Design Application Note, Doc. No. UBX-16007243
For regular updates to u-blox documentation and to receive product change notifications, register
on our homepage (www.u-blox.com).
Revision history Revision Date Name Comments
R01 01-Jul-2019 euyg Initial release
C030-R412M - User Guide
UBX-19010121 - R01 Contact Page 27 of 27
Contact For complete contact information, visit us at www.u-blox.com.
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